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John Barnes | Colliers | Phoenix

John Barnes

Brokerage Vice-President

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Professional Summary

As a vice president with Colliers International, I specialize in the acquisition, disposition and leasing of owner-occupied office and investment properties, with extensive experience in both landlord and tenant representation. I help property and business owners navigate the complexities of buying, selling and leasing small-to-medium sized commercial properties throughout metropolitan Phoenix.

I work closely with clients to achieve their financial goals through property acquisition, disposition and leasing. During my more than 30 years of experience as an investment sales specialist, I have developed an excellent reputation and the tools for simplifying the process for business owners to own their own buildings, thereby using their rent payments to build personal wealth.

With an extensive background in creatively marketing owner-occupied buildings, I am known by the brokerage community as the “go-to” person for selling 5,000 to 50,000-square-foot office properties in Central Phoenix. On many occasions, competitors have listed their own properties with me.

I bring in-depth market knowledge and expertise, coupled with a thorough understanding of how real estate impacts an owner’s business. Clients can rely on me to guide them in making strategic decisions that align with their business and financial objectives. I place great value in performing with integrity, providing unparalleled service and establishing long-term relationships with both clients and peers. I partner with clients to ensure their success, treating each transaction as it were my own investment.

Why business owners hire me:

  • Frustration with the amount of rent they pay to landlords with nothing to show for it and worry about having enough money set aside for retirement.
  • Realization investing in a building provides an opportunity to pay rent to themselves and diversify their investment portfolio.

Should I buy or lease: contact me to request a buy vs. lease analysis:

  • I understand the complexities of deciding whether to buy or lease a commercial property and provide a thorough and objective analysis to identify the option that best fits your business and economic objectives. Users of commercial space need to thoroughly understand the advantages and disadvantages of each option.
  • Whether buying or leasing, I will identify the best property to support the requirements of your business.

Why property owners hire me:

  • My reputation of integrity and success in working with owners to achieve their financial goals. I consider your short- and long-term objectives for ownership and develop a strategy to achieve the maximum return on investment.
  • Well-versed and experienced in working with buyers. Properties are presented in terms a buyer will understand.
  • I handle every tour and inspection at the property and regularly communicate results to the ownership.
  • Institutional-grade marketing is brought to every assignment.


  • 2017 - All-In Award for Colliers | Greater Phoenix for being fully committed to moving to the next level and to setting winning strategies for the future
  • Ranked #2 Team and #13 Overall Broker in Greater Phoenix in 2014
  • Ranked #1 in sales of owner/occupied office buildings within my market space in 2009
  • Top Office Producer in 1989; Top Five Producer in 1995, 1991, 1990, 1989 
  • Top 25 Producer for Colliers in U.S. and Canada in 1995
  • Recipient of 1994 Manager's Award


  • Bachelor of Science, Finance and Marketing, Indiana University
  • Associate Broker's License, Arizona Dept. of Real Estate

Memberships & Involvements

  • Colliers | Arizona Leadership Council
  • Maricopa County Sheriff’s Office Advisory Posse (MCSO), Commander
  • MCSCO Memorial Fund, Chairman of the Board


Connecticut Mutual Life Insurance; Eaton & Associates Insurance Agency; Hartford Accident & Indemnity Company; Maricopa Medical Society; Bank One; Brown Caldwell Engineering; KPMG Peat Marwick; Arizona Better Business Bureau,; Alliance Bank of Arizona; Lovitt Touche Insurance Agency; Lewis and Roca Attorneys; Phoenix Home & Garden Magazine;, Arizona Historic Properties LLC; State Farm Insurance Companies


"In my experience working with John Barnes, I have found him to be hard-working and detail oriented; and he always has his client's best interest in mind. From a seller's viewpoint, I find value in his extensive knowledge of the Central Phoenix market and his strong relationships with numerous local businesses.  Additionally, he sets clear expectations going into an engagement and consistently meets them. In an industry saturated with competition, these characteristics set John apart."—Warren Forsythe, Vice President, Alliance Bank of Arizona

“We recently utilized Mr. Barnes for a property transaction sale. He was very helpful throughout the entire process including negotiating the purchase contract, recommending vendors for inspections, managing to critical dates with the buying agent, providing utility and general building specifications to the buyer, and monitoring of the program through the closing date. In our experience, there is no better agent for commercial building transactions in downtown Phoenix.”—Dan Blaes, Arizona Historic Properties, LLC



Investment Properties

Service Lines

Capital Markets, Landlord Representation

Property Type


Featured Research

Jul 20, 2021

2021 Q2 Greater Phoenix Office Market Report

The Greater Phoenix office market ended Q2 2021 posting 76,690 SF of positive net absorption. Direct vacancy increased 20 bps quarter-over-quarter and 150 bps YOY to end the second quarter at 14.0%.
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Apr 14, 2021

2021 Q1 Greater Phoenix Office Market Report

Phoenix office market ended Q1 2021 posting -372,905 SF of net absorption, marking the second consecutive quarter of more than 100,000 SF of negative absorption. Direct vacancy increased 80 bps quarter-over-quarter and 150 bps year-over-year to finish first quarter at 13.8 percent.
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Jan 11, 2021

2020 Q4 Greater Phoenix Office Market Report

Fourth quarter posted 143,434 SF of negative net absorption, marking the first quarter of negative net absorption following 34 consecutive quarters of positive net absorption. Direct vacancy increased to 13%. Investment sales soared to over $570 million late in 2020.
Read More
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Featured News

Jul 22, 2021

Phoenix office market stabilizes as sublease additions slow

The pandemic’s impact on the Greater Phoenix office market appears to have passed its peak with the market stabilizing in second quarter and the market returned to positive net absorption.
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Apr 19, 2021

Phoenix office market challenged by pandemic impact

First quarter 2021 brought a significant uptick in office tenant touring and an amplification of business activity to Phoenix, according to Colliers’ office market report. Q1 2021 was the second consecutive quarter of negative net absorption, posting -372,905 square feet during the three months.
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